在 recyclerview 中实现 facebook 横幅广告

Posted 2023-03-17

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【中文标题】在 recyclerview 中实现 facebook 横幅广告【英文标题】：Implement facebook banner ads in recyclerview 【发布时间】：2020-07-22 06:15:47 【问题描述】：

我正在尝试在 recyclerview 的第三个位置实施 Facebook 横幅广告（不是原生横幅）。我创建了一个具有广告布局的ads_row.xml。 ads_row.xml 显示正常，但广告不可见。我将在下面发布我的适配器代码。

如果有人能给我建议，我应该使用哪种方法在 recyclerview 中展示广告，我将不胜感激。

快乐编码

NewsAdapter

public class NewsAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> implements View.OnClickListener 

private List<LinkedTreeMap> newsLists;
private Context context;
private LayoutInflater inflater;
AdView adView;
int AD_TYPE = 0;
int CONTENT_TYPE = 1;

public NewsAdapter(List<LinkedTreeMap> newsLists, Context context) 
    inflater = LayoutInflater.from(context);
    this.newsLists = newsLists;
    this.context = context;



public class PostViewHolder extends RecyclerView.ViewHolder 

    public TextView textView;
    public ImageView imageView;
    public TextView description;

    public PostViewHolder(@NonNull View itemView) 
        super(itemView);

        textView = (TextView) itemView.findViewById(R.id.textView);
        imageView = (ImageView) itemView.findViewById(R.id.image_ml);
        description = (TextView) itemView.findViewById(R.id.description);
    


public class AdViewHolder extends RecyclerView.ViewHolder 
    private LinearLayout adContainer;
    public AdViewHolder(@NonNull View itemView) 
        super(itemView);
        adContainer  = (LinearLayout) itemView.findViewById(R.id.myList_fb_banner);
        adContainer.addView(adView);
    


@NonNull
@Override
public RecyclerView.ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) 
     if(viewType == CONTENT_TYPE)
         View v = inflater.inflate(R.layout.mylist, parent, false);
         return new PostViewHolder(v);
     else
         View v = inflater.inflate(R.layout.ads_row, parent, false);
         AudienceNetworkAds.initialize(context);

         AdSettings.setIntegrationErrorMode(INTEGRATION_ERROR_CRASH_DEBUG_MODE);
         adView = new com.facebook.ads.AdView(context, "IMG_16_9_APP_INSTALL#MYPLACLEMENTID", AdSize.BANNER_HEIGHT_90);
         adView.setDescendantFocusability(FOCUS_BLOCK_DESCENDANTS);

         if (adView == null)
             adView.setVisibility(View.GONE);
         
         return new AdViewHolder(v);
     


@Override
public void onBindViewHolder(@NonNull RecyclerView.ViewHolder holder, int position) 
    if (getItemViewType(position) == CONTENT_TYPE)
        LinkedTreeMap newsList = newsLists.get(position);
        if (holder instanceof PostViewHolder)
            PostViewHolder viewholder = (PostViewHolder) holder;
            viewholder.textView.setText(newsList.get("title").toString());
            if (!newsList.get("image").toString().isEmpty()) 
                viewholder.imageView.setVisibility(View.VISIBLE);
                Picasso.get()
                        .load(newsList.get("image").toString())
                        .into(viewholder.imageView);
             else 
                viewholder.imageView.setVisibility(View.GONE);
            
        

    else if(getItemViewType(position) == AD_TYPE)
        if (holder instanceof AdViewHolder)
            AdViewHolder adViewholder = (AdViewHolder) holder;
            if (adViewholder.adContainer.getParent() != null)
    ((ViewGroup)adViewholder.adContainer.getParent()).removeView(adViewholder.adContainer);
            
            adViewholder.adContainer.addView(adView);
            adView.setDescendantFocusability(FOCUS_BLOCK_DESCENDANTS);
            if (adView == null)
                adView.setVisibility(View.GONE);
            
            if (position == newsLists.size()-3) 
                adView.setVisibility(View.VISIBLE);
                if (adView != null)
                    adView.loadAd();

【问题讨论】：

【参考方案1】：

我注意到了一些问题。

adView

if (adView == null)
    adView.setVisibility(View.GONE);

您很可能希望完全删除此语句。

newsLists.size() - 3

if (position == newsLists.size()-3) 
    adView.setVisibility(View.VISIBLE);
    if (adView != null)
        adView.loadAd();

第三行的索引总是 2.索引的枚举从0开始作为第一个索引。

将这段代码更新为：

if (position == 2) 
    adView.loadAd();

getItemViewType

我已经更新了你的适配器。您可以尝试将其复制粘贴到您的应用程序中以检查其工作方式。

public class NewsAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> implements View.OnClickListener 

    private List<LinkedTreeMap> newsLists;
    private Context context;
    private LayoutInflater inflater;

    int AD_TYPE = 0;
    int CONTENT_TYPE = 1;

    public NewsAdapter(List<LinkedTreeMap> newsLists, Context context) 
        inflater = LayoutInflater.from(context);
        this.newsLists = newsLists;
        this.context = context;

        // AudienceNetworkAds should be initialized inside of Activity, Fragment or even better Application class
        AudienceNetworkAds.initialize(context);
        AdSettings.setIntegrationErrorMode(INTEGRATION_ERROR_CRASH_DEBUG_MODE);
    

    public class PostViewHolder extends RecyclerView.ViewHolder 

        public TextView textView;
        public ImageView imageView;
        public TextView description;

        public PostViewHolder(@NonNull View itemView) 
            super(itemView);

            textView = (TextView) itemView.findViewById(R.id.textView);
            imageView = (ImageView) itemView.findViewById(R.id.image_ml);
            description = (TextView) itemView.findViewById(R.id.description);
        
    

    public class AdViewHolder extends RecyclerView.ViewHolder 
        private LinearLayout adContainer;
        private AdView adView;
        
        public AdViewHolder(@NonNull View itemView) 
            super(itemView);
            adContainer = (LinearLayout) itemView.findViewById(R.id.myList_fb_banner);
            
            adView = new com.facebook.ads.AdView(context, "IMG_16_9_APP_INSTALL#MYPLACLEMENTID", AdSize.BANNER_HEIGHT_90);
            adView.setDescendantFocusability(FOCUS_BLOCK_DESCENDANTS);
            adContainer.addView(adView);
        
        
        public void loadAd() 
            adView.loadAd();
        
    

    @Override
    public int getItemViewType(int position) 
        // Ad only at the third row
        return position == 2 ? AD_TYPE : CONTENT_TYPE;
    

    @NonNull
    @Override
    public RecyclerView.ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) 
        if (viewType == CONTENT_TYPE) 
            View view = inflater.inflate(R.layout.mylist, parent, false);
            return new PostViewHolder(view);
         else 
            View view = inflater.inflate(R.layout.ads_row, parent, false);
            return new AdViewHolder(view);
        
    

    @Override
    public void onBindViewHolder(@NonNull RecyclerView.ViewHolder holder, int position) 
        if (getItemViewType(position) == CONTENT_TYPE) 
            LinkedTreeMap newsList = newsLists.get(position);
            if (holder instanceof PostViewHolder) 
                PostViewHolder viewholder = (PostViewHolder) holder;
                viewholder.textView.setText(newsList.get("title").toString());
                if (!newsList.get("image").toString().isEmpty()) 
                    viewholder.imageView.setVisibility(View.VISIBLE);
                    Picasso.get()
                            .load(newsList.get("image").toString())
                            .into(viewholder.imageView);
                 else 
                    viewholder.imageView.setVisibility(View.GONE);
                
            
         else if (getItemViewType(position) == AD_TYPE && holder instanceof AdViewHolder) 
            ((AdViewHolder) holder).loadAd();

【讨论】：

获取空指针异常尝试在空对象引用上调用虚拟方法“void android.view.ViewGroup.addView(android.view.View)” 确保ads_row.xml 包含一个id为myList_fb_banner的线性布局。谢谢。广告现在是可见的..但我面临的问题是在我的应用程序中我有 4 个片段..现在发生的情况是，当广告在片段一中可见时在其他片段中不可见。很高兴它现在可以工作了。您的广告在片段之间的可见性是一个不同的问题。您可以在 cmets 中发布问题并在此处添加链接，我会看看。如果此问题中提出的问题得到解决，请接受它并可选择投票。 ***.com/questions/63032010/…

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